As standard, the product incorporates opposing interlocking rebate joints in one direction. This feature helps maintain acoustic integrity at joints within the installed barrier. SIDERISE acoustic void barrier - facades is available in a number of grades and thicknesses offering a wide range of sound reduction values. The product is also available with a choice of optional high mass central membranes to achieve substantially higher SRI values. Some acoustic void barriers - facades have certified fire resistance permitting their dual use as ceiling or floor void fire barriers. The product is extremely simple to fix and can be easily cut to accommodate service penetrations.

The rockfibre insulation core is available in two different structural forms:

SFO (conventional, i.e. direction of the internal fibres predominantly aligns with that of the barrier itself).

HSL (special ‘lamella’ construction, i.e. the internal fibres have a perpendicular orientation and additionally are held in a pre-compressed state).

The SFO form is also optionally available with the inclusion of a central limp heavy membrane. Two surface weights of the polymeric membrane are available: P5 (5 kg/m²) or P10 (10 kg/m²).

Product specification

An important note about specifying

The product information below is from the NBS Plus library of product clauses offered in NBS specification
products. It has been created by NBS for Siderise Group. Each product clause is authored in NBS format
and is intended for inclusion in project specifications. Please note that NBS product guidance is not a
replacement for the manufacturer's literature and it is recommended that Siderise Group be consulted
before specifying.